Your version of AutoCAD is not supported in Win10 as explained here For most users these free tips help a lot For others they roll back to an older Windows OS / older computer and hang on tight to it for life. For others still they purchase a fix from these folks As far as Autodesk is concerned, you will need to subscribe to a newer version of AutoCAD. There are many free to use CAD programs out there that behave/look like R2000 that you can get and use, they all read DWG files.

Google Search the term AUTOCAD ALTERNATES. Hope these help.

Feb 22, 2012  Windows 7: AutoCAD 2000 will it run on Widows 7 32 or 64 bit OS? 22 Feb 2012 #1: dpiekara. XP Pro 32 bit. AutoCAD 2000 will it run on Widows 7 32 or 64 bit OS? Have autocad 2000 running on XP Pro 32bit OS. Wanted to move up to Windows 7 either 32 or 64 bit.